FCC Technician Class Exam Study Guide - 2014-2018/Subelement T7 Group A
Station equipment: receivers; transmitters; transceivers; modulation; transverters; low power and weak signal operation; transmit and receive amplifiers
The Question Pool
[edit | edit source]Question 1
[edit | edit source]- Which term describes the ability of a receiver to detect the presence of a signal?
- A. Linearity
- B. Sensitivity
- C. Selectivity
- D. Total Harmonic Distortion
The correct answer is B.
Question 2
[edit | edit source]- What is a transceiver?
- A. A type of antenna switch
- B. A unit combining the functions of a transmitter and a receiver
- C. A component in a repeater which filters out unwanted interference
- D. A type of antenna matching network
The correct answer is B.
Question 3
[edit | edit source]- Which of the following is used to convert a radio signal from one frequency to another?
- A. Phase splitter
- B. Mixer
- C. Inverter
- D. Amplifier
The correct answer is B.
Question 4
[edit | edit source]- Which term describes the ability of a receiver to discriminate between multiple signals?
- A. Discrimination ratio
- B. Sensitivity
- C. Selectivity
- D. Harmonic Distortion
The correct answer is C.
Question 5
[edit | edit source]- What is the name of a circuit that generates a signal of a desired frequency?
- A. Reactance modulator
- B. Product detector
- C. Low-pass filter
- D. Oscillator
The correct answer is D.
Question 6
[edit | edit source]- What device takes the output of a low-powered 28 MHz SSB exciter and produces a 222 MHz output signal?
- A. High-pass filter
- B. Low-pass filter
- C. Transverter
- D. Phase converter
The correct answer is C.
Question 7
[edit | edit source]- What is meant by term “PTT”?
- A. Pre-transmission tuning to reduce transmitter harmonic emission
- B. Precise tone transmissions used to limit repeater access to only certain signals
- C. A primary transformer tuner use to match antennas
- D. The push to talk function which switches between receive and transmit
The correct answer is D.
Question 8
[edit | edit source]- Which of the following describes combining speech with an RF carrier signal?-
- A. Impedance matching
- B. Oscillation
- C. Modulation
- D. Low-pass filtering
The correct answer is C.
Question 9
[edit | edit source]- Which of the following devices is most useful for VHF weak-signal communication?
- A. A quarter-wave vertical antenna
- B. A multi-mode VHF transceiver
- C. An omni-directional antenna
- D. A mobile VHF FM transceiver
The correct answer is B.
Question 10
[edit | edit source]- What device increases the low-power output from a handheld transceiver?
- A. A voltage divider
- B. An RF power amplifier
- C. An impedance network
- D. All of these choices are correct
The correct answer is B.
Question 11
[edit | edit source]- Where is a RF preamplifier installed?
- A. Between the antenna and receiver
- B. At the output of the transmitter's power amplifier
- C. Between a transmitter and antenna tuner
- D. At the receiver's audio output
The correct answer is A.